class_docstr: Smoke tests for sox_util module
docstr: `list_effects` returns the list of available effects
docstr_tok: ["`","list_effects","`","returns","the","list","of","available","effects"]
code: def test_list_effects(self):
      """`list_effects` returns the list of available effects"""
      effects = sox_utils.list_effects()
      # We cannot infer what effects are available, so only check some of them.
      assert "highpass" in effects
      assert "phaser" in effects
      assert "gain" in effects
  
file_path: audio/test/torchaudio_unittest/utils/sox_utils_test.py
imports: from torchaudio.utils import sox_utils
  from torchaudio_unittest.common_utils import PytorchTestCase, skipIfNoSox
label_desc: Use image node_id 5 for calling the TestSoxUtils obj's underlying member method code with example usage: obj.test_list_effects() without return types